| AP2 |
AINTEGUMENTA (ANT) |
ANT initiates floral organ development [87]. It was shown to play a critical role in regulating the ovule and female gametophyte development [88]. |
| C2H2 |
RESPONSIVE TO HIGH LIGHT 41 (Zat2) |
Zat12was originally isolated as a light stress-response cDNA [89]; then, it was suggested to be able to regulate transcripts involved in the response to high-light, cold and oxidative stress [90]. |
| MADS box/MIKC |
AGL19 |
AGL19 controls (promotes) flowering downstream of a cold-perception pathway and acts independently of FT and SOC1 [42]. |
| MADS box/MIKC |
FLOWERING LOCUS C (FLC) |
FLC acts as an inhibitor of flowering [45]. |
| MADS box/MIKC |
MAF2 (AGL31) |
MAF2(AGL31), a paralog ofFLC,is another flowering repressor that acts in non-inductive photoperiods [46,47]. |
| MADS box/MIKC |
AGL69 (MAF5) |
MAF5is normally repressed. Overexpression ofMAF5under a non-inductive day length causes late-flowering [48]. |
| MADS box/MIKC |
AGL68 (MAF4) |
MAF4 represses the transition to flowering [49,50]. |
| MADS box/MIKC |
FLM (AGL27, MAF1) |
FLM acts as a flowering inhibitor [51]. |
| MADS box/MIKC |
AGL6 |
AGL6 was suggested to be able to act as a flowering repressor or activator, depending on the context [43]. |
| MADS box/MIKC |
AGL14 (XAANTAL2, XAL2) |
XAL2 is essential for flowering induction. XAL2 promotes flowering in response to different signals and is important for the maintenance and differentiating of flowering meristems [44]. |
| MADS box/MIKC |
AGAMOUS-like 15 (AGL15) |
AGL15 and AGL18 are floral transition repressors. Theagl15 agl18mutants were characterized by a partial suppression of the photoperiod pathway [52]. |
| MADS box/MIKC |
AGAMOUS-like 18 (AGL18) |
| Lyase Aromatic |
Phenylalanine Ammonia-Lyase (PAL1) |
PAL1 is a light response element. These motifs are conserved at similar positions in several elicitor or light-responsive genes from different species [91]. |
| – |
RBCSGBOXPS |
RBCSGBOXPS binding site, identified inParsley, is involved in light responsiveness [92]. |
| – |
REBETALGLHCB21 |
REBETALGLHCB21, first found in theLemna dibba Lhcbgenes, is necessary for phytochrome regulation. These elements are likely to function by repressing the promoter activity in the dark [93]. |
| – |
SORLIP5AT |
SORLIP5AT are PhyA-induced motifs that are overrepresented in light-induced genes. These elements, which predominate in the early responsive promoters, are more likely to have the fewest steps in the signal transduction cascade to gene expression [66]. |
| – |
MNF1ZMPPC1 |
MNF1ZMPPC1 is involved in the light-dependent transcriptional control of gene expression [94]. |
